Device for indicating the size bearing for shafts of unknown diameter



A g- 1952 J. E. FRAUENHOLTZ DEVICE FOR INDICATING THE SIZE BEARING FORSHAFT-S OF UNKNOWN DIAMETER Filed Aug. 15, 1950 'Illllll John E. Fraqen/ro/fz INVENTOR.

BY -Mag,

Patented Aug. 26, 1952 DEVICE FOR '.""'.IN.G7FOR SHAFTS OF UNKNOWN'DIAM-.li-TER v John E."Frauenholtz lfittshurgh,Pa. a I

- Application August 15, 1950 Serial No. 179,512

1 Claim. 1

This invention relates to new and useful improvements in gauges and theprimary object of the present invention is to provide an attachment forgauges that will indicate the size bearing required for shafts ofunknown diameter.

Another important object of the present invention is to provide a gaugeplate of a predetermined length that is used with a caliper forindicating the size bearing required for a shaft received between thecaliper jaws and thereby eliminating the heretofore procedure ofmeasuring a shaft with a caliper and then determining the size bearingnecessary through the use of a parts manual.

A further object of the present invention is to provide a bearing sizeindicating attachment for calipers that is quickly and readily appliedto or removed from a caliper in a convenient manner without in any wayharmfully affecting the caliper on which the same is attached.

A still further aim of the present invention is to provide a device ofthe aforementioned character that is simple and practical inconstruction, strong and reliable in use, small and compact instructure, inexpensive to manufacture, and otherwise well adapted forthe purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is an elevational view of a conventional vernier calipersmeasuring a shaft and showing the present invention attached to thecalipers;

Figure 2 is a side View of Figure 1 with the shaft removed;

Figure 3 is an elevational view of the present invention-per se;

Figure 4 is a perspective view of the present invention; and

Figure 5 is a transverse horizontal sectional View taken substantiallyon the plane of section line 5-5 of Figure 3.

Referring now to the drawings in detail wherein for the purpose ofillustration, there is dis- One wall of the slide I4 is provided with anclosed a preferred embodiment of the present invention, the numeral Iilrepresents an elongated graduated blade or rule having a stationary jaw12 secured thereto by any suitable means. A slide I4 is mounted on therule I0 and supports a laterally projecting movable jaw I6 thatparallels the jaw I2.

The screw is manually adjustable to bear against one edge of the ruleII] and thereby retain the slide longitudinally adjusted on the rule I0.An additional set screw 24 also carried by the slide I4 is manuallyadjusted to retain the slide longitudinally adjusted on the rule I0. g

The present invention does not attempt to claim the above well knownstructure but is merely an attachment therefor thatwill permit the sizebearing for a shaft of an unknown diameter to be determined in a minimumtime. The device comprises an elongated flat, substantially rectangularplate 26 of resilient material having inner and outer longitudinal edges28 and 30'.

A tongue or ear 32 integrally formed with the inner edge 28 of the plate26, and disposed intermediate the ends of the plate 26, is bent inwardlytoward the plate'26 and cooperates with the plate 26 for yieldinglygripping the rule I0 therebebetween and thereby retain the plate 26 uponthe rule II].

Lugs 34 and 36 are integrally formed with and project laterally from theedge 28 at the ends of the plate 26. The end edges 38 and 40 of the lugs34 and 36 are inwardly offset from the end edges 42 and 44 of the plate26 and recesses 46 and 48 are formed at the inner ends of the edges 38and 40 to permit the edges 38 and 40 to engage the opposing edges 50 and52 of the jaws I2 and IS with the edges 42 and 44 entering notches 54and 56 in the edges 50 and 52 of the jaws I2 and I6.

The plate 26 is of a predetermined lengthand will cooperate with thejawsI2 and I6 in indieating a proper bearing size. A group of plates 26of various lengths are to be employed for use with shafts of variousdiameters. If the jaws I2 and I6 do not contact the ends of the plate26, a feeler gauge G is employed and will indicate the play of a shaft Sbeing measured with a plate 26 of a known length.

In View of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of theconstruction, operation and advantages of the device will be quiteapparent to those skilled in this art. A more detailed description isaccordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a I 2,607,997 I 3 4 I preferred embodiment of theinvention the same ends of said plate being shaped to conform to the issusceptible to certain changes fully compreopposing inner edges of thepair of caliper jaws. hended by the spirit of the invention as hereinJOHN E. FRAUENHOLTZ. described and the scope of the appended claim.

Having described the invention, what is claimed 5 REFERENCES CITED asnew is: The following references are of record in the In a gaugeincluding a pair of relatively adfil of t t t; justablijawstatgdeivicefor determining {ethe -size 1 V V 1 T ibearing-=necessary=-fdt a shaft of an unknown di UNITED sTATEaPATENTSameter, said device comprising an elongated flat 10 Number Name Datesubstantially rectangular plate of resilient ma 337,234 Dupee Allg- 7,1833 terial having inner and outer :1 (ingitudinal-.edges; 2,256,676IYBISOIL Sept- 23, 1941 said inner edge having anelongatedtsubstantialljig FQREIGN PATENTS U-shaped notch therein, and atongue integrally l formed with the inner edge of said plateand 15' bggv. ,Country Date 935 paralleling said plate, said tongue-cooperating?swltzefland May 1 with said plate to yieldingly ;grip :the-:gauge,s

